June 9, 2020—KB4561666 (Monthly Rollup)

IMPORTANTWe have been evaluating the public health situation, and we understand this is impacting our customers. In response to these challenges, we are prioritizing our focus on security updates. Starting in May 2020, we are pausing all optional non-security releases (C and D updates) for all the supported versions of Windows client and server products (Windows 10, version 2004 down to Windows Server 2008 SP2).There is no change to the monthly security updates (B release – Update Tuesday); these will continue as planned to ensure business continuity and to keep our customers protected and productive.

Improvements and fixes

This security update includes improvements and fixes that were a part of update KB4556846(released May 12, 2020) and addresses the following issues:

• Addresses an issue that prevents users from updating .msi files from a network folder.
• Security updates to Windows App Platform and Frameworks, Windows Kernel, Microsoft Graphics Component, Windows Input and Composition, Windows Media, Windows Shell, Windows Cloud Infrastructure, Windows Fundamentals, Windows File Server and Clustering, Windows Hybrid Storage Services, the Microsoft Scripting Engine, and the Microsoft JET Database Engine.
  For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update

• Perform the operation from a process that has administrator privilege.
• Perform the operation from a node that doesn’t have CSV ownership.
  Microsoft is working on a resolution and will provide an update in an upcoming release.
  After installing this update, certain printers might fail to print. The print spooler might throw an error or close unexpectedly when attempting to print, and no output will come from the affected printer.You might also encounter issues with the apps you are attempting to print from. You might receive an error from the app or the app might close unexpectedly.Note This issue might also affect software-based printers, for example printing to PDF.| This issue is resolved in KB4567521.

How to get this update